I was surprised with the D-Tilt thing too, that caught me offguard.
I thought it was funny how when you shielded a full shuriken you would roll and get hit with Shadow Sneak, and once you caught on you ended up being dash grabbed at a high percent instead. Up-B to escape was something I didn't think of, though it seemed that if I'm fast enough I can still grab you.
That Dash Attack though, I think half of the time you hit me it was with DA.
Whether or not you were able to grab me was probably dependent on how close you were but yeah. I thought Water Shuriken was one of the best projectiles when the game first came out and I still think it's wonderfully versatile. If he could shield during the charge it would be insane oh hi Bayonetta
About his disjoints, they're big and in a lot of cases reach a large area. Greninja's FAir seems to outrange all of them though so I have to be wary of it.
I was surprised at how Shadow Sneak helped you break out of some low percent throw combos though occasionally you'd still get hit. It's a really nice option for Greninja. Also got to give you props on your recovery. It seems to be very solid and hard to gimp or even intercept.
I probably use dash attack too much but it's almost a do-it-all move. It's quick at frame 6, moves him forward a little, lingers, does decent damage, and can hit people on the ledge (and sometimes when they're snapping to it). It doesn't kill well usually but sometimes it works near the ledge.
I find Greninja very fun to watch and kind of wish he meshed with me a bit better.